Hundredths to frank h



G. WAOKER.

1GB MAKING MACHINE.

(No Model.)

Patented Nov. 8,1881.

Liven/Loy:

* UNITED STATES A PATENT OFFICE.

GEORGE WAGKER, OF NEW YORK, N. Y., ASSIGNOR ()F THIRTY-FIVE ONE- HUNDREDTHS TO FRANK OF SAME PLACE.

H. LAUTEN AND ELLISON SAUNDERS, BOTH ICE-MAKING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 249,211, dated. November 8, 1881.

' Application filed May 25, 1881. (No model.)

Toall whom it may concern:

. Be it known that I, GEORGE WAGKER, of the city, county, and State of New York, have invented a new and Improved Ice-Making May chine or Oold-AirApparatns, worked by compressed air, of which the following is a specification.

to useless power to prevent the forming of ,15 icicles in the tubing, piping, valves, and cylinders created by the moisture in the air used in the process of making ice or cold air, and to automatically regulate the degree of compression and expansion in the respective cylinders. Theinvention consists, first, of a cylinder to compress and heat the air secondly, of two tanks to contain glycerine or other material of like properties, to fill the air-compressingcylinder alternatelyat each stroke of the piston with 2 5 glycerine or other like material; thirdly, of one suction and one compression valve for each of the above glycerine-tanks, to admit air for compression and to discharge it into the coolingtubes; fourthly, of an adjustable faucetto ado mit the glycerine; fifthly, of a funnel where the glycerine or other like material is poured into the machine; sixthly, of an expansion-cylinderwith valves to regulate the power for the Working of the machine, to expand and there- 3 5 by cool the air, and to discharge into the freezing-tank; seventhly, of an outward and an inward tank for the reception of the cold air coming from the expansiomcylinder and reservoir for the smaller tin tanks, wherein the water to befrozen is located, and, lastly, of tubing, piping, &c., necessary for the transmission and connection of the compressed and expanded air through the difierent parts of the machine, all of which will be fully described in connection with the accompanying drawings.

In the accompanying drawings, Figure 1 is an elevation of my improved ice-machine. Fig. 2 is a longitudinal section of the expansion-cylinder, showing the valves of the same and-how they are worked by the piston.

Referring to the drawings, A is a compres-.

sion air-cylinder, which inner part stands in connection, by openings in the heads of the cylinder, with tanks D and E, which latter hold a volume of fully the capacity of the cylinder each. Tanks D and E have on their upper end each a suction-valve, n and n, and a compression-valve, m and m. The com pression-valves m and m are connected with a pipe, 1", which lieshigher than valves m and m. Pipe r leads into cooler O. From cooler 0 leads a pipe, 8, to expansion-cylinder B, where it is closed by spring-valves z 2, Fig. 2, alternately. From expansion-cylinder B leads a pipe, t, which is alternately closed by the slide-valves w and w,-

power is attached to move the same.-

The operation of, the machine is as follows: Pure glycerine (or otherlike material)is poured into funnel a, Fig. l, which transmits it to outer tank, F, from where it flows through the opened faucet 0 to suction-valves n and n. Shaft K is now slowly rotated until glycerinetanks D and E and compression-cylinder Aare filled with glycerine. Then faucet 0 is almost closed, so that the glycerine can soak through only drop by drop. At this time tank F must hold so much glycerine that the opening of faucet o is covered by it. As the pistons a and b are moved, a. presses the glycerine contained in cylinder A into tank D, after which it flows, after filling valve-box m, into pipe r, and from there to the pipes of cooler 0. At the same time, andt-hrough the same move of piston a, glycerine is sucked into cylinderA from tank E, while tank E at the same time is sucked full of air, which comes from tank F through pipe P and suction-valve n. As'the volume of cylinder A is equal to the volume of tank E, only glycerine and no air can enter into cylinder A. When thepiston or moves back again the glycerine contained in cylinder A is forced back into tank E, where the surface of the glycerine acts as a real piston and presses the air from tank E through valve m to pipe 1', and from there, to cooler O, at the same time filling tank E and valve-boxes m and n with glycerine again, and air enters into tank D by pipe P and valve 1%, and also a little glycerine through faucet 0., and so at each rotation of the crank K the same operation is repeated.

It is obvious that by the above proceedings cylinder A is always filled with glycerine; also are suction-valves n and n and compression-valves m and m always covered with the same, as such is always from faucet 0 induced drop by drop into suction-valves a and n. This-surplus can only flow off through pipe 1" after covering compression-valves m and m, thereby keeping the valves perfectly tight, also the piston and stuffing-box of the cylinder A, and, filling every nook and corner of the latter completely,it prevents the existence of the least vacuum or dead-space in the cylinder. The surplus of glycerine admitted through adjustable faucet 0 goes with the compressed air through cooler (l, pipe 8, and expansion-cylinder B, where it also acts as a lubricator for valves and pistons, and from there it oozes through pipe it into tank F again, from where it commences its course of circulation anew. By the circulation of the glycerine through the whole machine, as shown above, the glycerine furthermore acts as. an agent to absorb the moisture out of the air used in making the ice.

Box T incloses the whole machine, and water is led through the former to cool the compressed air and the whole machine in general.

From cooler G the compressed air goesthrough' pipe 8 to expansion-cylinder B. This cylinder, Fig. 2, has the same diameter as the compression-cylinder A, but is longer than the former. As piston b has the same stroke as piston to, it follows that piston b can only come within a certain distance to the heads of cylinder B. As shown in Fig. 2, the compressed air enters through pipe 8 and the valves 2 and z in to expansion-cylinder B, and after its expansion makes its exit through sliding valves wand 40. Valves z and z are closed by springs, and the compressed air that presses on them moves the piston b toward valve x. The latter closes near the end of the stroke by adjustable stoppers g and 9',- but as sliding valve a2 is firmly connected with sliding valve .70, it at the same moment opens the latter. After valve 00 is closed the rest of the stroke of piston 11 comes in contact yet with the inside end of valve 2 and opens the same, and while the piston is in contact with z" keeps it open, during which time the compressed air forces itself into the space between piston and head of expansioncylinder B until the piston loses contact with valve 2, when, of course, the latter closes instantly. Now, the admitted compressed air presses the piston b with as much force as had been used to compress the same, which requires thereby less power to work the machine. At the move of the piston 12 toward valve a: the air expands and its temperature lowers at once as many degrees as have been added to it by compression. When arrived at valve or the same is closed, 00 opened, and 2 opened and closed in the same manner as described above. The expanded air of low temperature is moved by the piston I) out of cylinder B through pipe 15, Fig. into tank F and G, where it freezes the water in smaller tin tanks hunginto tank G.

From tank F the air is sucked through pipe P and suction-valves a and a into tanks D and E again, and the same procedure commences again its circulation, as heretofore described.

It is obvious that through the size of the space between piston and cylinder-head of expansion-cylinder B the exact degree of expansion, as well as the degree of compression, is given; then, as soon as the air is so much compressed that the volume of air of the compression-cylinder is equal to the amount of compressed air between the head and piston of expansion-cylinder B, the normal pressure is reached, which, it is obvious, remains from this out constantly the same, as the expansion-cylinder emits exactly as much air as the compression-cylinder presses in between the head and piston of cylinder B. By this relative method all meters,'&c., are obviated, and in this manner it can in advance be concluded with how much pressure the ice-machine is wanted to work.

This apparatus, as will be readily understood, furnishes an efficient ice-making machine, whereof every working part is excellently lubricated, the moisture absorbed from the used. air, and all valves kept perfectly airtight by the glycerine, thereby lessening the power to be applied, and the latter regulated by the proportionate construction of the cylinders, as heretofore described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. As an improvement in ice-making machines, the combination, with compression-cylinder A, of the glycerine-tank 1), connecting in the upper end, and glycerine-tank E, connecting in the lower end of compression-cylinder A, substantially as herein set forth and described.

2. In an ice-making machine, the combination, with cylinder A and piston to, of the suction-val ves n and n, the compression-valves m and m, and the glycerine-tanks l) and E, substantially as herein set forth and described.

3. In an ice-making machine, the combination of pipe P with faucet 0 and suction-valves n and a, substantially as herein set forth and described.

4. In an ice-making machine, the combination, with tank F, of the faucet 0, substantially as herein set forth and described.

5. In an ice-making machine, the combination of the sliding valves 00 and m with the connecting-bang substantially as hereinset forth and described.

6. In an ice-making machine, the combina- 5 tion of the adjustable stoppers g g of piston 12 with the sliding valves .90 and at, substantially as herein set forth and described.

7. In an ice-making machine, the combination of expansion-eylinder B and piston 11 with sliding valves m and m and spring-valves z 10 and z. i

GEORGE WAUKER.

Witnesses H 1 E. SAUNDERS,

FRANKH. LAUT'EN. 

